Removal of sulfur components from low sulfur gasoline using copper exchanged zeolite Y at ambient temperature

Characteristics of sulfur removal by silver-titania adsorbents at ambient conditions

“…Cu-Y zeolite was tested prepared using liquid phase ion exchange as reported previously (King and Li 2006;Takahashi et al 2001a). The adsorbent was pretreated in flowing (ultrapure) He at 450 • C for 2 hours insitu prior to desulfurization studies.…”

“…A number of transition metal oxides have been employed for this purpose Khare 2001;Morton et al 2004aMorton et al , 2004bMorton et al , 2004cPrice et al 2003;Simon et al 2004;Sughrue et al 2003). Ni in its reduced metallic form Ma et al 2005;Velu et al 2005b), supported chloride salts of Cu and Pd (Hernández-Maldonado et al 2005b;Wang et al 2006), zeolitic structures ion exchanged with Cu, Ag, Ce, Ni have also been shown to be effective (Bhandari et al 2006;Hernández-Maldonado et al 2005b;Yang 2003, 2004c;King and Li 2006;Velu et al 2003;Xue et al 2006); particularly Y type zeolites (Bhandari et al 2006;King and Li 2006;Takahashi et al 2001a;Takahashi and Yang 2001b;Yang et al 2003Yang et al , 2004. Among support structures, SiO 2 , Al 2 O 3 (Hernández-Maldonado and Yang 2004b; Jeevanandam et al 2005;Kim et al 2006) and activated carbon (Hernández-Maldonado and Yang 2004b; Kim et al 2006) are the most common.…”

The performance of pelletized Ce-Y and Ni-Y zeolites for removal of thiophene from model gasoline solutions

“…Bhandari et al also investigated the performance of Ni-Y and Cu-Y zeolites for sulfur removal [11]. King and Li examined the ability of Cu(II)-Y and Cu(I)-Y to remove thiophene from various hydrocarbon mixtures at ambient temperature [14]. Xue et al studied the Ag+, Cu+, and Ce3+ ion-exchanged Y zeolites as adsorbents specifically for selective adsorption of thiophene and 1-benzothiophene in a model solution of HDS treated gasoline [8].…”

Preparation of CuNaY zeolites with microwave irradiation and their application for removing thiophene from model fuel

“…However, achieving deep desulfurization by HDS would require more severe reaction condition, increased reactor size, and paying the penalty of increased hydrogen consumption [5]. Recently, many efforts have been made to develop the non-HDS methods to produce ultralow-sulfur fuels such as biodesulfurization [6], extraction using ionic liquids [7], selective adsorption [1,5,[8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24], and oxidative desulfurization [25], etc. Among these alternative new methods, selective adsorption at ambient temperature and pressure is considered as the most economical approach.…”